Bioturbation Activity by the Grapsid Crab Helice Formosensis and Its Effects on Mangrove Sedimentary Organic Matter

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dc.contributor.authorMchenga, Islam
dc.contributor.authorMfilinge, Prosper L.
dc.contributor.authorTsuchiya, Makoto
dc.date.accessioned2016-07-08T11:52:08Z
dc.date.available2016-07-08T11:52:08Z
dc.date.issued2007
dc.description.abstractGrapsid crabs are one of the most abundant and potentially the most important group of macrofauna inhabiting mangrove forests. A field study was conducted in the Manko wetland (Okinawa Island, southern Japan) to investigate how the burrowing crab Helice formosensis affects the sedimentary fatty acid (FA) and physicochemical characteristics of subtropical mangrove sediments. Multi-dimensional scaling (MDS) results from FA profiles revealed clear differences between burrow compartments and sediments with and without crabs. The impacts of burrowing were demonstrated by higher percentages of bacterial, vascular plant, and macroalgal FA markers in the burrow compartments and crab sediment areas. Conductivity and redox potential were significantly higher in sediments of the burrow opening shaft than in the burrow chamber. We found a similar pattern in surface sediments with crabs, but not in surface sediments without crab habitats. These results suggest that H. formosensis significantly influences the physicochemical properties, FA composition, and organic matter profiles of its surrounding environment.en_US
dc.identifier.citationMchenga, I.S., Mfilinge, P.L. and Tsuchiya, M., 2007. Bioturbation activity by the grapsid crab Helice formosensis and its effects on mangrove sedimentary organic matter. Estuarine, Coastal and Shelf Science, 73(1), pp.316-324.en_US
dc.identifier.doi10.1016/j.ecss.2007.01.016
dc.identifier.urihttp://hdl.handle.net/20.500.11810/2859
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.subjectBioturbationen_US
dc.subjectFatty acid markersen_US
dc.subjectHelice formosensisen_US
dc.subjectOrganic matteren_US
dc.subjectSedimentsen_US
dc.titleBioturbation Activity by the Grapsid Crab Helice Formosensis and Its Effects on Mangrove Sedimentary Organic Matteren_US
dc.typeJournal Article, Peer Revieweden_US
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